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authorStanislaw Gruszka <sgruszka@redhat.com>2012-12-20 17:31:51 +0400
committerJohn W. Linville <linville@tuxdriver.com>2013-01-08 00:16:53 +0400
commit70277f47b58b174a6b0b891dcd06ae5125afb73b (patch)
tree7e03b3f60879982502e944366ebcb5db005c1f4b /drivers
parent93476b1e685036e8513be8df34ca442096af6b4c (diff)
downloadlinux-70277f47b58b174a6b0b891dcd06ae5125afb73b.tar.xz
iwlegacy: add flush callback
Dump implementation of flush, which just wait until all TX queues become empty. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/iwlegacy/3945-mac.c1
-rw-r--r--drivers/net/wireless/iwlegacy/4965-mac.c1
-rw-r--r--drivers/net/wireless/iwlegacy/common.c36
-rw-r--r--drivers/net/wireless/iwlegacy/common.h1
4 files changed, 39 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c
index d604b4036a76..962400a20161 100644
--- a/drivers/net/wireless/iwlegacy/3945-mac.c
+++ b/drivers/net/wireless/iwlegacy/3945-mac.c
@@ -3474,6 +3474,7 @@ struct ieee80211_ops il3945_mac_ops = {
.sta_add = il3945_mac_sta_add,
.sta_remove = il_mac_sta_remove,
.tx_last_beacon = il_mac_tx_last_beacon,
+ .flush = il_mac_flush,
};
static int
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index 6a86ed45835d..c40020c8b273 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -6308,6 +6308,7 @@ const struct ieee80211_ops il4965_mac_ops = {
.sta_remove = il_mac_sta_remove,
.channel_switch = il4965_mac_channel_switch,
.tx_last_beacon = il_mac_tx_last_beacon,
+ .flush = il_mac_flush,
};
static int
diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c
index 7e16d10a7f14..56b80219d695 100644
--- a/drivers/net/wireless/iwlegacy/common.c
+++ b/drivers/net/wireless/iwlegacy/common.c
@@ -4707,6 +4707,42 @@ out:
}
EXPORT_SYMBOL(il_mac_change_interface);
+void
+il_mac_flush(struct ieee80211_hw *hw, bool drop)
+{
+ struct il_priv *il = hw->priv;
+ unsigned long timeout = jiffies + msecs_to_jiffies(500);
+ int i;
+
+ mutex_lock(&il->mutex);
+ D_MAC80211("enter\n");
+
+ if (il->txq == NULL)
+ goto out;
+
+ for (i = 0; i < il->hw_params.max_txq_num; i++) {
+ struct il_queue *q;
+
+ if (i == il->cmd_queue)
+ continue;
+
+ q = &il->txq[i].q;
+ if (q->read_ptr == q->write_ptr)
+ continue;
+
+ if (time_after(jiffies, timeout)) {
+ IL_ERR("Failed to flush queue %d\n", q->id);
+ break;
+ }
+
+ msleep(20);
+ }
+out:
+ D_MAC80211("leave\n");
+ mutex_unlock(&il->mutex);
+}
+EXPORT_SYMBOL(il_mac_flush);
+
/*
* On every watchdog tick we check (latest) time stamp. If it does not
* change during timeout period and queue is not empty we reset firmware.
diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h
index a9a569f432fb..37fe553b25e0 100644
--- a/drivers/net/wireless/iwlegacy/common.h
+++ b/drivers/net/wireless/iwlegacy/common.h
@@ -1723,6 +1723,7 @@ void il_mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
int il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
enum nl80211_iftype newtype, bool newp2p);
+void il_mac_flush(struct ieee80211_hw *hw, bool drop);
int il_alloc_txq_mem(struct il_priv *il);
void il_free_txq_mem(struct il_priv *il);